BTC area
bitcoin lacks stability, so it doesn't have "inherent value", it's just a virtual proct. If we recognize its legitimacy, it will have a significant adverse impact on the banks of all countries, and even can replace the currencies of all countries. Finally, a few people will manipulate the world's monetary system, which is a very dangerous existence. It's not money. Whether it's legal or not depends entirely on whether a country recognizes it as legal or not< At present, the United States, China and South Korea all think it is not a currency. Among the big countries, bitcoin is only recognized as the "unit of account" by the German Ministry of finance, but it is only a unit of account, which does not mean that it is mainly a currency.
Bitcoin, which does not belong to any country, was originally a kind of network virtual currency, similar to Tencent's q-coin, but it has been able to buy real-life goods. A bitcoin is equivalent to 6989 yuan
the reason why the website can't enter may be e to the problems of the website itself, the Chinese government's blocking the website, or your network speed. At present, the website can be accessed normally.
The original intention of Nakamoto's design of bitcoin is to build a point-to-point trading network that is decentralized, transaction information can not be tampered with, and the total amount of money is constant, so as to solve the problems of excessive issuance of legal currency and inflation
this is the value of bitcoin's initial design, to keep the purchasing power of money
But later, the development of bitcoin went against Nakamoto's idea. In the past nine years, the price of bitcoin soared by millions of times, creating countless myths of sudden wealth and driving another instry miningthe value of bitcoin has become a tool for "sudden wealth". More and more people join the bitcoin network, hoping to achieve financial freedom. Digital cryptocurrencies such as bitcoin have become investment procts, like diamonds or gold
by purchasing bitcoin, people can achieve the purpose of wealth appreciation and asset preservation in many troubled areas. At the same time, many people make use of the fluctuation of bitcoin price to speculate, such as moving bricks, making bands and so on
another important value of bitcoin can not be ignored is blockchain, the underlying technology of bitcoin. Because of the popularity of bitcoin, many companies and indivials begin to pay attention to blockchain, and constantly try to use blockchain technology to change the existing business and create new value. It is with the help of bitcoin that blockchain has achieved such rapid development
bitcoin is also a great social experiment for all mankind, which promotes the reform of the financial instry and gives many original things a new perspective
the law of integer multiplication is extended to fractions, so that students can feel the subtle relationship between the multiplication of fractions by integers and the addition of fractions with the same denominator
2. Remember the pithy formula well
brackets should be calculated first with brackets, from front to back without brackets, multiplication and division first, and then addition and subtraction
3 Clear the concept
let students understand that the reciprocal of an integer is one of the original fractions, and the reciprocal of a fraction is to exchange the numerator and denominator